“signal tower”的概念、定义、翻译、参考文献-科学参考

单词	signal tower
释义	signal tower [`sig·nǝl ´tau̇·ǝr] ^{CIVIL ENGINEERING} A switch tower from which railroad signals are displayed or controlled.
随便看	grid equator grid-glow tube grid heading gridiron pendulum gridistor grid latitude grid leak grid-leak detector grid limiter grid locking grid longitude grid magnetic angle grid meridian grid metal grid modulation grid navigation grid nephosope grid neutralization grid north grid parallel grid-plate capacitance grid-plate transconductance grid-pool tube grid prime vertical grid pulse modulation

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